digraph G {
  a[label="", shape=rectangle];
  b[label="", shape=rectangle];
  c[label="[10,0,14,4]", shape=rectangle];
  {rank=same; b, c}
  d[label="", shape=rectangle];
  e[label="[1,1]", shape=rectangle];
  {rank=same; d, e}
  h[label="[2]", shape=rectangle];
  i[label="[3]", shape=rectangle];
  {rank=same; h, i}
  a -> b;
  a -> c;
  b -> d;
  b -> e;
  d -> h;
  d -> i;
}
